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Muscles: Dorsal Interossei Pedis.

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Anatomy & Physiology: Muscles—Dorsal Interossei Pedis.

Structure.

  • Origin: adjacent side of metatarsals.
  • Insertion: proximal phalanges (both sides of toe II and lateral side of toes 3-4).

Function.

  • Concentric action: adduction and flexion of proximal metatarsophalangeal joints; extension of toes at interphalangeal joints.
  • Reverse mover action: abduction of metatarsals of toes 2-4 at MTP; flexion of metatarsals at MTP; extension of proximal phalanges at PIP and DIP.
  • Eccentric action: controls/restrains/decelerates adduction of MTP of toes 2-4; extension of MTP of toes 2-4; flexion of PIP and DIP of toes 2-4.
  • Isometric action: stabilize MTP, DIP, PIP.
  • Innervation: lateral plantar nerve.
  • Arterial supply: branches of plantar arch.

Clinical Significance.

More.

References

Biel, A. (2015). Trail guide to the body: A hands-on guide to locating muscles, bones and more.

Clark, M., Lucett, S., Sutton, B. G., & National Academy of Sports Medicine. (2014). NASM essentials of corrective exercise training. Burlington, MA: Jones & Bartlett Learning.

Jenkins, G., & Tortora, G. J. (2012). Anatomy and Physiology: From Science to Life, 3rd Edition International Stu. John Wiley & Sons.

Muscolino, J. E. (2017). The muscular system manual: The skeletal muscles of the human body.